"Bucket
Buddies" is an online project recommended for elementary school
students (grades 1-5). Students around the United States and other
countries will collect samples from local ponds to answer the question:
Are the organisms found in pond water the same all over the world?

"Take
a Dip" is an online project for middle school students.
From September 9 - November 15, 2002, students will team up around
the globe to test fresh water. Join this collaborative project, comparing
the water quality of your local river, stream, lake or pond with other
fresh water sources around the world.